/*
 * @Description: 
 * @Author: yeeChen
 * @Date: 2022-12-13 20:04:26
 * @LastEditTime: 2022-12-13 20:05:15
 * @LastEditors: yeeChen
 */
const path = require('path')

const fpath = 'a/b/c/index.html'

const fext = path.extname(fpath)

console.log(fext);